Valve.



no. 670,794. Patented Mar. 25, 49m.

. J. B. LoTT.

VALVE.

(No Modal.) (Applicmbn med July 25, 1900.)

JL f/ 'B (R C i c W////,.r|||uM /f "D J F|G-7 l E' il' /ATTEST- Ji BIVM/DUUR.-

. MaI/Mln UNiTEn STATES PATENT OFFICE.

JOHN B. LOTT, OF ANDERSON, INDIANA.

VALVE.

SPECIFICATION forming part of Letters Patent No. 670,794, dated March26, 1901.

Application filed July 25, 1900,

To a/ZZ whom it may concern:

Be it known that I, JOHN B. LOTT, a citizen of the United States, and aresident of Anderson, in the county of Madison and State of Indiana,have made a certain new and useful Invention in Valves; and I declarethe following to be a full,clear,and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to letters of reference marked thereon, which form a part of thisspeciiication.

Figure l is a plan View of my valve. Fig. 2 is a side elevation of thesame, showing the material engaged thereby. Fig. 3 is a similar viewshowing the valve in cross-section and closed. Fig. 4 is a cross-sectionof the valve, taken in a direction at right angles to the section as inFig. 3 with valve open. Figs. 5 and 6 show a modified form of valve.Fig. 7 shows a valve the tongue of which is arranged to move in bothdirections.

The invention relates to button-valves and it consists in the novelconstruction and combination of parts, as hereinafter set forth.

In the accompanying drawings the letter A designates a doublebutton-valve consisting of the two lateral annular portions B B,connected at their inner edges by a central tubular portion or neck O.Between these ring portions B, which are of the nature of flanges to theneck C and are 'wedge form in crosssection, is an annular interval D,which provides for the engagement or fastening of the valve in position.One of these anges may be made removable and threaded to engage a threadof the tubular portion, if desirable.`

In the tubular portion isa web or diaphragm E, normally closing the tubeat the middle of its length, and this diaphragm is formed with atransverse valve-tongue g, extending from the wall of the tube andfitting a transverse valve opening or seat h, of similar shape to thatof said tongue.

If the tongue is designed to work in both directions in the tube, theedge of the tongue is formed at right angles to its faces, so that itwill pass the edge of its seat in either direction. Usually, however,the edge of the tongue is beveled, as indicated at e, while the edge ofhe openin g or seat is correspondingly i s indicated at c, in order thatthe Serial No. 24,803. (No model.)

edge of the tongue will abut against the seat when closed. When,however, pressure is brought to bear against the side of the tongue inthe proper direction, the `valve will open to allow passage; but whenpressure is brought against the opposite side of the tongue the valvewill close in a very effectual manner. This valve may be made of rubberor metal or such compositions as may be found suitable.

liigs. 5 and 6 illustrate a modified form of my invention, wherein thediaphragm E is 0f rubber or the like and is provided with perforationstherein, which are of tapered form, the walls thereof coming together toclose the same at one end of the perforations when the diaphragm is innormal position. When the diaphragm is bowed, however, under presu sureof air or other fluid, as shown in Fig. 6, these walls of theperforations will separate to admit the passage of such fluidtherethrough.

What I claim as my invention, and desire to secure by Letters Patent,is-

l. A valve consisting of parallel lateral separated annuli connected bya tubular portion having a valved diaphragm, substantially as specified.

2. A double-button or double-flange valve, havinga tubular portioncarrying a web, having a bevel-edge valve seat or opening, and avalve-tongue of similar shape to said valve seat or opening, and havinga bevel edge of reverse character to that of said valve seat or opening,substantially as specified.

3. A valve, consisting ot' two annular lateral portions connected by atubular portion or neck to leave an annular space therebetween, and adiaphragm in said tubular portion, and having a valve formed thereinintegrally thereof, substantially as speciiied.

4t. A valve consisting ot two annular lateral portions of wedge form incross-section,

and connected at their inner edges by a tubular portion or neck to leavean annular space therebetween, and a diaphragm in said tubular portion,having a valve formed therein integrally thereof, substantially asspecified. In testimony whereof I affix my signature in presence of twowitnesses.

JOHN B. LOTT. Witnesses:

J osIAn M. MILLER, DE WITT C. CHIPMAN.

IOO

